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lyuba116
@lyuba116
July 2022
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1. Решите
а) (2x^{3} - x^{2} +3 x-1)+(-7 x^{2} -5 x+4)=
б) (5 x^{2} -4 x+3)-(3 x^{2} - x+2)=
2. Найдите р(а)=р1(а)+р2(а),если
в) р1(а)=3а-4; р2(а)=11-3а;
г) р1(а)=-4-3а; р2(а)=7-8а.
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Answers & Comments
aleks41
1,a. (2x^3-x^2+3x-1)+(-7x^2-5x+4)=2x^3-x2+3x-1-7x^2-5x+4=2x^3-8x^2-2x+3.
1,б. (5x^2-4x+3)-(3x^2-x+2=5x^2-4x+3-3x^2+x-2=2x^2-3x+1.
2,в. p(a)=3a-4+11-3a=7.
2,г. p(a)= -4-3a+7-8a=3-11a.
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Answers & Comments
1,б. (5x^2-4x+3)-(3x^2-x+2=5x^2-4x+3-3x^2+x-2=2x^2-3x+1.
2,в. p(a)=3a-4+11-3a=7.
2,г. p(a)= -4-3a+7-8a=3-11a.